var script = document.createElement("script");
script.setAttribute("type", "text/javascript");
script.setAttribute("src", "general_functions.js");
document.getElementsByTagName("head")[0].appendChild(script);


function cauhoi_import()
{
	var file = $("#import_file").val();
	var extension = file.split('.').pop().toLowerCase();
	if( $.inArray(extension, ['xml', 'txt']) == -1 )
	{
		document.getElementById("import_ketqua").innerHTML = "File không hợp lệ. Xin chọn file xml.";
		return false;
	}
	else
		return true;
}

function cauhoi_export()
{
	document.getElementById("export_ketqua").innerHTML = "đang export ...";
	xmlhttp = createXMLHttpRequest();
	xmlhttp.onreadystatechange=function()
  	{
  		if (xmlhttp.readyState==4 && xmlhttp.status==200)
    	{
			document.getElementById("export_ketqua").innerHTML = "<a href='" + xmlhttp.responseText + "'>link download</a>";
    	}
  	}
	var serverURL = "cauhoi_export.jsp?t=" + (new Date()).getTime();
	xmlhttp.open("GET",serverURL,true);
	xmlhttp.send();
}